JET DIFFUSION CONTROL USING A PLASMA ACTUATOR

通过对射流出口施加介质阻挡放电诱导流来控制射流扩散。电极采用向心式和同轴式。获得了以下结果。向心式电极，电压的增加使收缩效应增强，频率的增加使扩散效应扩大。而同轴型电极，则有可能扩散效果增强，不稳定性增强，崩溃和涡环的形成提前发生并缩短扩散射流。

Jet diffusion control was performed by giving induced flow of dielectric barrier discharge to the jet exit. Centripetal type and coaxial type were used as the electrode. The following findings were obtained. The centripetal type electrode, Increase of the voltage enhances the flow contraction effect, and Increase of the frequency expands the diffusion effect. The coaxial type electrode, it is possible diffusion effect is enhanced by the instability is enhanced, collapse and the formation of vortex rings occurs early and to shorten the diffusion jet.